In this study, in order to develop the composition ceramics for low loss multilayer piezoelectric actuator application, $Pb(Zn_{1/2}W_{1/2})O_3-Pb(Mn_{1/3}Nb_{2/3})O_3-Pb(Zr,Ti)O_3$ (abbreviated as PZW-PMN-PZT)ceramics according to the amount of $MnO_2$ addition were fabricated...
In this study, in order to develop the composition ceramics for low loss multilayer piezoelectric actuator application, $Pb(Zn_{1/2}W_{1/2})O_3-Pb(Mn_{1/3}Nb_{2/3})O_3-Pb(Zr,Ti)O_3$ (abbreviated as PZW-PMN-PZT)ceramics according to the amount of $MnO_2$ addition were fabricated using two-stage calcinations method. And also, their dielectric and piezoelectric properties were investigated. At the 0.2 wt% $MnO_2$ added PZW-PMN-PZT ceramics sintered at $930^{\circ}C$, density, electromechanical coupling factor $k_p$, dielectric constant ${\varepsilon}_r$, piezoelectric $d_{33}$ constant and mechanical quality factor $Q_m$ showed the optimum value of $7.84g/cm^3$, 0.543, 1,392, 318.7 pC/N, 1,536, respectively for low loss multilayer ceramics actuator application.
In this study, in order to develop the composition ceramics for low loss multilayer piezoelectric actuator application, $Pb(Zn_{1/2}W_{1/2})O_3-Pb(Mn_{1/3}Nb_{2/3})O_3-Pb(Zr,Ti)O_3$ (abbreviated as PZW-PMN-PZT)ceramics according to the amount of $MnO_2$ addition were fabricated using two-stage calcinations method. And also, their dielectric and piezoelectric properties were investigated. At the 0.2 wt% $MnO_2$ added PZW-PMN-PZT ceramics sintered at $930^{\circ}C$, density, electromechanical coupling factor $k_p$, dielectric constant ${\varepsilon}_r$, piezoelectric $d_{33}$ constant and mechanical quality factor $Q_m$ showed the optimum value of $7.84g/cm^3$, 0.543, 1,392, 318.7 pC/N, 1,536, respectively for low loss multilayer ceramics actuator application.
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가설 설정
1. All the specimens showed only peaks of tetragonal structure. And also, pyrochlore or other second phase did not detected.
제안 방법
For investigating the dielectric properties, capacitance was measured at 1 kHz using an LCR meter(ANDO AG-4034) and dielectric constant was calculated. For investigating the piezoelectric properties, the resonant and anti-resonant frequencies were measured by an Impedance Analyzer(Agilent 4294A) and then the electromechanical coupling factor and mechanical quality factor were calculated, and piezoelectric constant was measured using d33-meter.
In this study, in order to develop composition ceramics capable of being sintered at the low temperature for multilayer piezoelectric actuator application, Pb(Mni/3Nb2/3)O3-Pb(ZrTi)O3 ceramics, which is substituted as Pb(Zni/2Wi/2)O3 for enhancing its low temperature sintering effect, were fabricated using two-stage calcination method and the amount of MnO2 addition, And their dielectric and piezoelectric properties were investigated.
In this study, in order to develop the low temperature sintering composition ceramics for low loss multilayer piezoelectric actuator application, PZ W-PMN-PZT ceramics were manufactured according to the amount of M11O2 addition and their piezoelectric characteristics were investigated.
이론/모형
The specimens were fabricated using two-stage calcinations method. In the first stage, PbO and sintering aids excepted such as ZrO2, TiO, MnO2, Nb2O5, WO3 and ZnO for the given composition were weighted by mole ratio and the powders were ball-milled for 24 h.
성능/효과
2. The density of no MnO2 added specimen and grain size of 0.3 wt% MnOa were 7.90 g/cm and 3.08 gm, respectively.
3. At the 0.2 wt% MnO2 added PZW-PMN-PZT ceramics sintered at 930 ℃, density, electromechanical coupling factor kp, dielectric constant sr, piezoelectric(坛constant and mechanical quality factor Qm showed the optimum value of 7.84 g/cm3, 0.543, 1, 392, 318.7 pC/N, 1, 536, respectively for multilayer ceramics actuator application.
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